Security 获取当前会话的三种方法

Posted 2021-05-21 流星蝴蝶没有剑

Security 获取当前会话的三种方法

1. 第一种，通过获取HttpSession的会话中的用户信息，在获取会话对象SecurityContextImpl，然后将用户信息封装。

@GetMapping("getUserSessionH")
    @ResponseBody
    public String getUerSessionH(HttpSession httpSession) {
        Enumeration<String> names = httpSession.getAttributeNames();
        String re = "";
        while (names.hasMoreElements()) {
            String name = names.nextElement();
            SecurityContextImpl securityContext = (SecurityContextImpl) httpSession.getAttribute(name);
            re += name + "<br>";
            re += securityContext + "<br>";

            Authentication authentication = securityContext.getAuthentication();
            UserDetails userDetails = (UserDetails) authentication.getPrincipal();

            re += userDetails + "<br>";
            re += userDetails.getUsername() + "<br>" + "<br>";
        }
        return re;
    }

第二种
直接获取上下文

@GetMapping("getUserSessionS")
    @ResponseBody
    public String getUerSessionS() {
        String re = "";
        SecurityContext securityContext = SecurityContextHolder.getContext();
        re += securityContext + "<br>";
        Authentication authentication = securityContext.getAuthentication();
        UserDetails userDetails = (UserDetails) authentication.getPrincipal();
        re += userDetails + "<br>";
        re += userDetails.getUsername() + "<br>" + "<br>";
        return re;
    }

第三种
直接将用户认证作为参数获取到

 @GetMapping("getUserSessionA")
    @ResponseBody
    public String getUerSessionA(Authentication authentication) {
        String re = "";
        UserDetails userDetails = (UserDetails) authentication.getPrincipal();
        re += userDetails + "<br>";
        re += userDetails.getUsername() + "<br>" + "<br>";
        return re;
    }